Ritter, Paul. <br/><br/>
Educreation and feedback :  education for creation, growth and change / 
by Paul Ritter. 
 - 2nd ed. 
 - Oxford :  Pergamon Press,  1979. 
 - 432 p. ;  24 cm. 
<br/><br/><label>ISBN: </label>0080214754 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education.